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Improvement of elastic and piezoelectric response of ZnO nanorods grown in aqueous solution

Research Project

Project/Area Number 26790046
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionOsaka University (2015)
University of Tsukuba (2014)

Principal Investigator

Watanabe Kentaro  大阪大学, 基礎工学研究科, 助教 (40582078)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords圧電性半導体 / ZnO自立ナノロッド / 選択的溶液成長 / 応力下その場観察 / 単一構造評価
Outline of Final Research Achievements

Arrayed ZnO free-standing nanorods are synthesized on a patterned substrate in the precursor aqueous solution for potential piezoelectric applications. Mechanical and piezoelectric properties of single hexagonal ZnO nanorod are investigated by unique nanoprobe-CL(cathodoluminescence) techniques, which is based on a low-temperature SEM-CL nanospectroscope with an in-situ nanomanipulator of a metal probe-electrode or a force sensor.
We have revealed that lateral growth sectors of a hexagonal ZnO nanorod has a higher residual carrier concentration than the axial growth sector which can be a short circuit of the piezoelectric charges degrading the output power and that the as-grown ZnO nanorod exhibits a high mechanical strength with uniaxial fracture strain as high as 0.04 which is promising for nanoscale piezoelectronics. We have succeeded to suppress the nanorod lateral growth and realized the direct growths of ZnO nanorods on Au film, to improve the piezoelectric properties.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (11 results)

All 2016 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 2 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Int'l Joint Research] ハンガリー科学アカデミー(ハンガリー)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Arbitrary cross-section SEM-cathodoluminescence imaging of growth sectors and local carrier concentrations within micro-sampled semiconductor nanorods2016

    • Author(s)
      Kentaro Watanabe*, Takahiro Nagata, Seungjun Oh, Yutaka Wakayama, Takashi Sekiguchi, János Volk, and Yoshiaki Nakamura
    • Journal Title

      Nature Communications

      Volume: 7 Issue: 1

    • DOI

      10.1038/ncomms10609

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Band-gap deformation potential and elasticity limit of semiconductor free-standing nanorods characterized in situ by scanning electron microscope-cathodoluminescence nanospectroscopy2015

    • Author(s)
      Kentaro Watanabe, Takahiro Nagata, Yutaka Wakayama, Takashi Sekiguchi, Robert Erderyi, and Janos Volk
    • Journal Title

      ACS Nano

      Volume: 9 Issue: 3 Pages: 2989-3001

    • DOI

      10.1021/nn507159u

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Nanospectroscopic investigation of individual free-standing semiconductor nanocrystals2016

    • Author(s)
      Kentaro Watanabe
    • Organizer
      Energy, Materials, & Nanotechnology Meeting on Smart & Multifunctional Material
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      2016-08-23
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Nanoprobe-CL法による半導体ナノ結晶の顕微物性評価2016

    • Author(s)
      渡辺 健太郎
    • Organizer
      応用物理学会
    • Place of Presentation
      東京工業大学大岡山キャンパス
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] 溶液成長ZnO単結晶ナノロッド:成長時の格子間水素ドナーの取り込みと残留キャリア濃度分布2015

    • Author(s)
      渡辺 健太郎、中村 芳明
    • Organizer
      応用物理学会関西支部
    • Place of Presentation
      大阪大学中之島センター
    • Year and Date
      2015-09-30
    • Related Report
      2015 Annual Research Report
  • [Presentation] 半導体ナノワイヤの変形ポテンシャル・弾性限界のその場顕微分光評価2015

    • Author(s)
      渡辺 健太郎,長田 貴弘,若山 裕,関口 隆史,フォルク ヤノシュ
    • Organizer
      2015年春季<第62回>応用物理学会
    • Place of Presentation
      東海大学
    • Year and Date
      2015-03-11 – 2015-03-14
    • Related Report
      2014 Research-status Report
  • [Presentation] 半導体ナノワイヤ歪変調バンドギャップのその場顕微評価2015

    • Author(s)
      渡辺 健太郎
    • Organizer
      nano tech 2015
    • Place of Presentation
      東京ビックサイト(江東区)
    • Year and Date
      2015-01-28 – 2015-01-30
    • Related Report
      2014 Research-status Report
  • [Presentation] 半導体ナノワイヤのバンド端変形ポテンシャルと曲げ歪・表面弾性2015

    • Author(s)
      渡辺 健太郎
    • Organizer
      SATテクノロジー・ショーケース2015
    • Place of Presentation
      つくば国際会議場(つくば市)
    • Year and Date
      2015-01-21
    • Related Report
      2014 Research-status Report
  • [Presentation] 溶液成長ZnOナノロッドの成長モード制御による残留ドナー濃度均一化2014

    • Author(s)
      渡辺 健太郎,呉 承俊,長田 貴弘,若山 裕,関口 隆史,フォルク ヤノシュ
    • Organizer
      2014年秋季<第75回>応用物理学会
    • Place of Presentation
      北海道大学
    • Year and Date
      2014-09-17 – 2014-09-20
    • Related Report
      2014 Research-status Report
  • [Presentation] Multi-directional ZnO nano-rod growth visualized by SEM-CL technique2014

    • Author(s)
      Kentaro Watanabe, Seungjun Oh, Janos Volk, Takahiro Nagata, Yutaka Wakayama, Takashi Sekiguchi
    • Organizer
      The 10th International Nanotechnology Conference on Communication and Cooperation
    • Place of Presentation
      Gaithersburg, Maryland, USA
    • Year and Date
      2014-05-13 – 2014-05-15
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2017-05-10  

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